I am guessing the white sticker on the DIMM socket itselft would be the correct sticket?? I have 3 different white stickers on the backside underneath the black RAM cover itself and I also have a long white sticker located on the DIMM socket with 3 different separte numbers on it. I will give you those 3 located on the DIMM socket itself. Here they are.
CT:PX380011ZO6EV1 bottom left of sticker
These 2 are located upper right of sticker:
31AX3MB0080
LAN:984BE1BE3F66
My chipset information from CPU-Z
Northbridge Intel GL40 rev.07
Southbridge Intel 82801IM (ICH9-M) rev. 03